Results of the IMO Video Meteor Network - March 2008
====================================================
A strong February was followed by a weak March. The weather was ok at the
begin and end of March, but all the remaining time it was at least in central
Europe unsteady and rarely co-operative. Only our two American observers
enjoyed better weather and collected most observing time of all. Thanks to
the constantly large number of observers (the data from three cameras are
still missing), we managed to record once more almost 3000 meteors in well
above thousand hours of observing time.
The highlight of last month was reported from Brannenburg: On March 6,
00:09:50 UT, Wolfgang Hinz recorded an unusual double meteor (Figure 1, left).
It's not unusual because two meteors appeared by chance at the same instant,
but because they appeared in parallel and exactly at the same time. In the
course of the years I have seen hundreds of thousand video meteor from the
camera network, but this one is unique. I was still thinking about a
"terrestrial" explanation for this event (one camera, for example, recorded
reflections for some time, that looked remarkably similar - but they appeared
for all bright meteors) when I received a message that Wolfgang had recorded
another double meteor of the same type on March 9, 23:35:44 UT (Figure 2).
Figure 1: Double meteor from March 6, 2008, recorded by Wolfgang Hinz with
AKM2 (left). The same meteor was captured by Sirko Molau from Seysdorf with
MINCAM1 (right). Here only one meteor is visible on the first glimpse, but
the second one becomes visible at high magnification.
What a strange coincidence, but after a longer inspection of the recording
birds, insects and other artefacts could be ruled out. Then I remembered that
the fields of view of AKM2 and MINCAM1 overlap partly. Indeed I found that at
least the first meteor was recorded by both cameras (Figure 1, right).
However, the recording of Mincam1 showed only one meteor. Only at higher
magnification it became clear that this meteor was "split". In fact, both
meteors were recorded by MINCAM1, but they were not as clearly separated
because of the lower scale and maybe also because of the different geometry.
Figure 2: Already on March 9, 2008, Wolfgang Hinz recorded another double
meteor.
That proves the reality of these events: Wolfgang Hinz recorded indeed two
double meteors within just three days and I have no explanation for this
"double first prize".
1. Observers
============
Code Name Place Camera FOV LM Nights Time Meteors
--------------------------------------------------------------------------------
BRIBE Brinkmann Herne HERMINE (0.8/6) 55 dg 3 mag 19 31.4 h 79
CASFL Castellani Monte Baldo BMH1 (0.8/6) 55 dg 3 mag 18 76.6 h 112
BMH2 (0.8/6) 55 dg 3 mag 20 116.8 h 130
CRIST Crivello Valbrevenna STG38 (0.8/3.8) 80 dg 3 mag 1 7.7 h 16
GONRU Goncalves Tomar TEMPLAR1(0.8/3.8) 80 dg 3 mag 9 63.8 h 97
HERCA Hergenroth. Tucson SALSA (1.2/4) 80 dg 3 mag 25 211.8 h 232
HINWO Hinz Brannenburg AKM2 (0.85/25) 32 dg 6 mag 8 58.3 h 111
KACJA Kac Kostanjevec METKA (0.8/8) 42 dg 4 mag 13 88.6 h 150
Kamnik REZIKA (0.8/6) 55 dg 3 mag 13 57.2 h 95
Ljubljana ORION1 (0.8/8) 42 dg 4 mag 5 31.1 h 44
KOSDE Koschny Noordwijkerh. ICC4 (0.85/25) 25 dg 5 mag 3 14.6 h 19
LUNRO Lunsford Chula Vista BOCAM (1.4/50) 60 dg 6 mag 16 122.7 h 331
MOLSI Molau Seysdorf AVIS2 (1.4/50) 60 dg 6 mag 11 57.5 h 385
MINCAM1 (0.8/6) 55 dg 3 mag 22 70.3 h 181
PRZDA Przewozny Berlin ARMEFA (0.8/6) 55 dg 3 mag 13 66.8 h 180
ROBBI Roberto Verona FIAMENE (0.8/3.8) 80 dg 3 mag 13 63.4 h 102
SLAST Slavec Ljubljana KAYAK1 (1.8/28) 50 dg 4 mag 12 48.2 h 72
STOEN Stomeo Scorze MIN38 (0.8/3.8) 80 dg 3 mag 12 77.2 h 146
STORO Stork Ondrejov OND1 (1.4/50) 55 dg 6 mag 1 3.5 h 45
STRJO Strunk Herford MINCAM2 (0.8/6) 55 dg 3 mag 14 20.4 h 36
MINCAM3 (0.8/8) 42 dg 4 mag 5 12.5 h 23
MINCAM5 (0.8/6) 55 dg 3 mag 7 23.8 h 48
WEBMI Weber Chouzava TOMIL (1.4/50) 50 dg 6 mag 1 2.5 h 23
YRJIL Yrjola Kuusankoski FINEXCAM (0.8/6) 55 dg 3 mag 9 61.3 h 106
--------------------------------------------------------------------------------
Sum 31 1388.0 h 2763
2. Observing Times (h)
======================
Mar 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
--------------------------------------------------------------------------------
BRIBE 0.7 - 2.1 1.1 0.3 - 2.5 - 0.7 - 0.8 0.5 - 6.8 1.3
CASFL 5.1 8.0 2.4 - 10.9 - - - - - - 4.9 9.4 2.0 -
11.1 10.0 1.0 - 10.9 - - - - - 10.5 10.5 10.4 3.7 -
CRIST - - - - - - - - - - - - - - -
GONRU 3.3 2.6 - 10.7 10.9 10.8 - - - - - - - - -
HERCA - - - 9.5 5.4 10.6 4.5 10.5 8.3 10.4 8.7 9.9 - 8.6 8.3
HINWO - - - - 9.6 7.4 - 9.3 10.2 - - - - - -
KACJA 9.5 9.0 - - - - - - 10.0 - 9.4 - 7.6 - -
1.7 10.0 - - - - - - 0.5 0.6 3.1 - 10.1 - -
- 7.2 5.0 - - - - - - - - - 7.1 - -
KOSDE - - - - - - 7.0 - - - - - - - -
LUNRO - - 7.9 10.4 6.0 5.8 - - 8.3 10.2 9.9 9.9 3.0 - -
MOLSI - - - - 10.3 9.2 2.4 - 7.5 - - - - - -
- - 3.1 - 11.0 9.0 0.4 3.8 6.3 - - 3.1 - - 1.6
PRZDA - - - - 5.0 - - - - 4.5 - - 4.2 - 3.3
ROBBI 2.0 3.4 - - 5.4 - - - - - 3.5 7.0 7.4 3.0 -
SLAST 1.5 9.1 - - 2.3 - - - 2.1 - 5.1 2.8 7.3 - -
STOEN 6.1 7.2 - - 9.6 - - - - - 3.1 7.2 9.3 - -
STORO - - - - 3.5 - - - - - - - - - -
STRJO - - 4.5 2.0 - - - - 1.5 0.5 1.5 - 0.5 3.5 1.5
- - 6.0 2.5 - - - - - - - - - - -
- - 7.5 6.3 0.7 - - - - - - - - - -
WEBMI - - - - - - - - - - - - - - -
YRJIL - - - - 9.3 - - - - - - - - - -
--------------------------------------------------------------------------------
Sum 41.0 66.5 39.5 42.5111.1 52.8 16.8 23.6 55.4 26.2 55.6 55.8 76.3 27.6 16.0
Mar 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
-------------------------------------------------------------------------------------
BRIBE - 1.2 0.3 0.4 0.3 - 0.3 5.4 - - - 1.0 - 1.7 - 4.0
CASFL 5.0 - 2.5 2.0 2.0 3.5 1.0 4.0 4.2 - - - 1.1 3.1 - 5.5
5.3 - 1.0 6.5 0.5 1.0 1.5 4.0 9.8 - - - 2.6 7.5 2.0 7.0
CRIST - - - - - - - - - - - - - 7.7 - -
GONRU - - - - - - - - 9.0 - - - 2.7 4.3 - 9.5
HERCA 4.1 - 10.2 7.1 10.1 8.9 6.5 8.1 8.2 3.9 10.2 10.0 10.0 - 9.9 9.9
HINWO - - - - - - - - - 2.8 - - 2.8 9.0 7.2 -
KACJA - - 5.8 1.9 2.5 - - - - 9.0 2.3 - - 8.7 9.2 3.7
- - 4.1 3.9 2.8 - - - - 7.7 - - - 0.8 9.5 2.4
- - - - - - 6.2 - - - 5.6 - - - - -
KOSDE - - - - - - 5.2 - 2.4 - - - - - - -
LUNRO - - 10.0 3.0 - - 9.3 7.1 9.9 6.0 6.0 - - - - -
MOLSI - - 6.2 - - - 2.6 - - 2.7 - 0.5 - 7.4 5.8 2.9
0.2 0.5 7.7 0.2 - 5.1 3.2 0.9 0.7 3.3 - 2.6 1.1 3.9 2.2 0.4
PRZDA - 4.9 5.3 - - - - 7.7 - - 6.5 2.6 2.9 9.3 6.6 4.0
ROBBI - 3.2 - - - 1.5 3.0 - 3.3 3.0 - - 4.0 5.1 4.2 4.4
SLAST - - - - - - - - - 7.0 1.8 - - 2.0 5.0 2.2
STOEN - - - - 6.2 - - - - 9.8 - - 3.6 7.3 1.0 6.8
STORO - - - - - - - - - - - - - - - -
STRJO - 0.5 - - - - - 2.2 0.5 - 0.5 - - 0.6 - 0.6
- 2.0 - 1.5 - - - - 0.5 - - - - - - -
- 3.7 - - - - - 3.2 1.0 - - - - 1.4 - -
WEBMI - - - - - - - - - - - - - 2.5 - -
YRJIL - - - 1.8 - 8.8 - - 7.5 - - 6.7 5.2 7.6 6.8 7.6
-------------------------------------------------------------------------------------
Sum 14.6 16.0 53.1 28.3 24.4 28.8 38.8 42.6 57.0 55.2 32.9 23.4 36.0 89.9 69.4 70.9
3. Results (Meteors)
====================
Mar 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
--------------------------------------------------------------------------------
BRIBE 2 - 4 3 1 - 8 - 3 - 3 2 - 15 2
CASFL 12 9 2 - 15 - - - - - - 9 11 2 -
11 15 1 - 11 - - - - - 11 11 13 3 -
CRIST - - - - - - - - - - - - - - -
GONRU 1 3 - 14 23 16 - - - - - - - - -
HERCA - - - 11 6 9 5 12 5 9 16 10 - 11 11
HINWO - - - - 34 12 - 22 19 - - - - - -
KACJA 15 11 - - - - - - 17 - 11 - 14 - -
2 18 - - - - - - 1 1 5 - 17 - -
- 16 5 - - - - - - - - - 8 - -
KOSDE - - - - - - 8 - - - - - - - -
LUNRO - - 36 43 9 19 - - 15 38 26 33 2 - -
MOLSI - - - - 99 87 10 - 40 - - - - - -
- - 10 - 33 18 1 9 10 - - 8 - - 2
PRZDA - - - - 12 - - - - 7 - - 15 - 17
ROBBI 8 6 - - 11 - - - - - 4 11 12 4 -
SLAST 4 15 - - 5 - - - 2 - 6 6 12 - -
STOEN 16 13 - - 27 - - - - - 4 13 17 - -
STORO - - - - 45 - - - - - - - - - -
STRJO - - 7 3 - - - - 3 1 2 - 1 8 2
- - 11 4 - - - - - - - - - - -
- - 15 14 1 - - - - - - - - - -
WEBMI - - - - - - - - - - - - - - -
YRJIL - - - - 23 - - - - - - - - - -
--------------------------------------------------------------------------------
Sum 71 106 91 92 355 161 32 43 115 56 88 103 122 43 34
Mar 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
-------------------------------------------------------------------------------------
BRIBE - 4 1 1 1 - 1 10 - - - 3 - 4 - 11
CASFL 7 - 4 4 3 4 3 3 7 - - - 1 3 - 13
4 - 2 5 1 1 2 4 11 - - - 3 5 4 12
CRIST - - - - - - - - - - - - - 16 - -
GONRU - - - - - - - - 24 - - - 1 4 - 11
HERCA 6 - 15 5 13 8 14 5 10 4 8 9 14 - 8 8
HINWO - - - - - - - - - 2 - - 1 10 11 -
KACJA - - 16 5 7 - - - - 14 1 - - 16 18 5
- - 10 5 4 - - - - 17 - - - 2 9 4
- - - - - - 7 - - - 8 - - - - -
KOSDE - - - - - - 6 - 5 - - - - - - -
LUNRO - - 32 6 - - 19 14 20 12 7 - - - - -
MOLSI - - 22 - - - 7 - - 16 - 2 - 45 31 26
1 2 14 1 - 25 8 4 3 10 - 8 1 7 5 1
PRZDA - 24 12 - - - - 14 - - 13 9 8 29 12 8
ROBBI - 4 - - - 2 3 - 5 6 - - 4 7 8 7
SLAST - - - - - - - - - 7 1 - - 4 8 2
STOEN - - - - 8 - - - - 17 - - 3 13 1 14
STORO - - - - - - - - - - - - - - - -
STRJO - 1 - - - - - 4 1 - 1 - - 1 - 1
- 6 - 1 - - - - 1 - - - - - - -
- 6 - - - - - 7 2 - - - - 3 - -
WEBMI - - - - - - - - - - - - - 23 - -
YRJIL - - - 1 - 14 - - 14 - - 11 7 17 6 13
-------------------------------------------------------------------------------------
Sum 18 47 128 34 37 54 70 65 103 105 39 42 43 209 121 136
Sirko Molau, 2008/04/18